Countries that had or have land in the British isles

A breakaway part of the Roman Empire that functioned de facto as a separate state from 260 to 274.

A breakaway from the Roman Empire in wales

This country controlled most of the Mediterranean and stretched all the way up to England

This country is the predecessor of England and defeated the vikings.

This is a Scottish kingdom that fell to England during the 1200's

This is a kingdom located in modern day Wales

This Anglo-Saxon kingdom was located in north modern day England

This country in 1066 did the last successful conquest of England.

This group/Country took England multiple times

This is a kingdom placed in the modern day province of Sussex that surrendered to the vikings in exchange for peace.

One of the three notable Anglic kingdoms founded after Sub-Roman Britain was settled by Anglo-Saxons in an era called the Heptarchy.

A Gaelic kingdom in Ireland which existed from the 1st century BC to 1118, with Cork serving as its capital.

This country split apart from the Roman Empire and took the West side including England for a short while.

This kingdom's capitol is London.

Aa Gaelic over-kingdom in north-eastern Ireland during the Middle Ages and is one of the 5 Gaelic kingdoms.

Located in middle Ireland and the location of the High-Council of Gaelic kings.

This is one of the Gaelic kingdoms that resides in South East Ireland.;

This Gaelic kingdom had West Ireland.

This was the world's largest Empire

This empire was made by England and its ruler was Henry the second

This is the Vikings at their height led by Cnut the Great

This nation was invaded multiples times by England and Ireland but finally fell to England in 1700's.

This kingdom was founded in the aftermath of the Roman withdrawal from Britain and fell when the Kingdom of Mercia took it.

This nation existed multiple times throughout history and has the most coastline in the world.

This is the modern day union of north Ireland, Scotland, wales, and England.

This nation occupies the island of Ireland currently

This was a Scandinavian union that existed for a short period of time.